to say to someone, 'you could survive a car crash' implys that they are fat, therefore would not be killed in a car crash due to all their 'padding'. in extreme cases, 'crash crash' can be exchanged for 'plane crash' or even 'a armageddon'.
Bek: OMG, I am getting soo fat lately!
Christina and Taylah: you could survive a car crash.
February 04, 2009